Module 8: Monopoly

Why this module matters

It helps learners connect Module 8: Monopoly to the broader course path in Principles of Microeconomics — Part 5: Market Efficiency & Monopoly. Learners build working familiarity with Monopoly, Barriers to entry, and Natural monopoly. The lessons stay grounded in concrete examples and explanations tied to this module's core topics. Learners can check understanding through 20 quiz questions tied to this module.

What this module covers

• Monopoly
• Barriers to entry
• Natural monopoly
• Monopoly and Efficiency As we have seen in working with the monopoly model, monopolies are not efficient.
• We will learn about the issues and behaviors that arise in a monopoly market structure, which sometimes appear in other markets that are not pure monopolies.
• Define efficiency, consumer surplus, producer surplus and deadweight loss.

Topical takeaways

• Monopoly and Efficiency As we have seen in working with the monopoly model, monopolies are not efficient.
• We will learn about the issues and behaviors that arise in a monopoly market structure, which sometimes appear in other markets that are not pure monopolies.
• Regardless of how the firm gained its monopoly or how long that position is likely to last, while the firm is a monopoly it is, by definition, the only firm in the marketplace.
• Below, beyond that it's always less than the price because we are taking the price, we have a gain of this and a loss on the lower price from the proceeding units.
• Minor stylistic cleanup (narrator tags, cue numbers) applied by Qualora; the underlying text is verbatim from Professor Solnick's lecture.
• Their demand curve at their firm level is this downward sloping market demand curve.

Lesson arc

1. Module 8 Overview: Monopoly (10 min)

   Monopoly and Efficiency As we have seen in working with the monopoly model, monopolies are not efficient.

   • Monopoly and Efficiency As we have seen in working with the monopoly model, monopolies are not efficient.
   • We will learn about the issues and behaviors that arise in a monopoly market structure, which sometimes appear in other markets that are not pure monopolies.
   • Regardless of how the firm gained its monopoly or how long that position is likely to last, while the firm is a monopoly it is, by definition, the only firm in the marketplace.
2. Video 1: When we have a competitive firm the marginal revenue, the extra (6 min)

   Below, beyond that it's always less than the price because we are taking the price, we have a gain of this and a loss on the lower price from the proceeding units.

   • Below, beyond that it's always less than the price because we are taking the price, we have a gain of this and a loss on the lower price from the proceeding units.
   • Minor stylistic cleanup (narrator tags, cue numbers) applied by Qualora; the underlying text is verbatim from Professor Solnick's lecture.
   • Their demand curve at their firm level is this downward sloping market demand curve.
3. Video 2: now that we see the relationship of marginal revenue and price in a (9 min)

   You know if you have a monopoly with something nobody wants, your demand curve is really way down there, it's not going to work.

   • You know if you have a monopoly with something nobody wants, your demand curve is really way down there, it's not going to work.
   • Okay so that is, we're just restating what we said before or clarifying that.
   • Well, if we compare it to a competitive situation, in competition our quantity would be here because the marginal cost curve is this, the supply curve and marginal costs curve are the same.
4. Video 3: Here's the worksheet on monopoly (6 min)

   Just because something is a monopoly in one market, doesn't mean they already have worldwide domination.

   • Just because something is a monopoly in one market, doesn't mean they already have worldwide domination.
   • In monopoly, the industry's demand curve is the firm's demand curve, since they are the only firm in the market.
   • Well, it's A, because there are barriers to entry in monopoly.

Key concepts

• Monopoly
• Marginal revenue
• Barriers to entry
• Natural monopoly
• Price discrimination

Practice and assessment

Learners reinforce this module through 20 quiz questions and a supporting glossary covering 5 key terms, with practice centered on Monopoly and Efficiency As we have seen in working with the monopoly model, monopolies are not efficient.

Concept glossary

Monopoly

A market with a single seller and no close substitutes for the good.

Barriers to entry

Factors that prevent new firms from entering a market (patents, licensing, economies of scale, essential-input control).

Natural monopoly

A market in which a single firm can supply the entire market at lower cost than multiple firms due to significant economies of scale.

Price discrimination

The practice of charging different prices to different buyers for the same product based on willingness to pay.

Continue to the full course

Principles of Microeconomics — Part 5: Market Efficiency & Monopoly is the parent course for this module. Use the full course page for pricing, certificate details, and the full curriculum.